[R] nnet function

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From: Tarca Adi Laurentiu (ltarca@rsvs.ulaval.ca)
Date: Wed 05 May 2004 - 01:12:30 EST


Message-id: <6.0.0.22.2.20040504111037.01c39a38@biota.rsvs.ulaval.ca>


Hi I got two questions about the nnet function in R. I would be thankful to
have an answer.

1) Does the function intrinsically normalize the X and Y matrices before
the training, or normalization should be
done by the user.
  2) I need to understand the $wts matrix. I do imagine that it is a single
column transformation of the two
matrices of weighs (input to hidden Ninputs+1 x Nodes) and hidden to output
(Nodes+1 x Noutputs).

Thanks
----------------------------------------------
Dr. Laurentiu Adi Tarca
Post Doc. in Bioinformatics
Forest Biology Research Center
C-E-Marchand Bld, 3113
Laval University
Quebec, (Qc)
G1K-7P4
Tel: 656-2131 ext. 4509
e-mail: ltarca@rsvs.ulaval.ca

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